require "digest/sha2"

module Devise
  module Encryptable
    module Encryptors
      # = AuthlogicSha512
      # Simulates Authlogic's default encryption mechanism.
      # Warning: it uses Devise's stretches configuration to port Authlogic's one. Should be set to 20 in the initializer to simulate
      #  the default behavior.
      class AuthlogicSha512 < Base
        # Generates a default password digest based on salt, pepper and the
        # incoming password.
        def self.digest(password, stretches, salt, pepper)
          digest = [password, salt].flatten.join('')
          stretches.times { digest = Digest::SHA512.hexdigest(digest) }
          digest
        end
      end
    end
  end
end